Cowl ventilator



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H. R. HOLTZ COWL VENTILATOR Filed Nov. 16,'1922 FVCS'.

' INVENTOR. fr?. Hoi. r2'.

BY 5.424% A TTORNEYS.

Patented .lone l0, i924.

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HAROLD R. HOLTZ, OF SN FRANCISCO, CALFORNKA.

COWL VENTILTDR.

Application filed November 16, 1922. Serial No. 601,3E3.

Be it known that l, limoni) ll. ller/rz,

a citizen of the United States, and a resident of the city and county of dan Francisco, State of California, have invented certain new and useful Improvements in Covvl Ventilators, of which the following is a speci? iication.

My invention relates to ventilators and more particularly to cowl ventilators for motor vehicles.

An object of my invention is to provide a readily adjustable ventilator that will not rattle in any open, or its closed position, and of such exterior appearancetliat it will not detract from the body lines ot a vehicle.

Another object is to provide a ventilator of simple and substantial construction, allowing ample ventilation of the driver-s compartment of the vehicle, and readily ad justable by the driver as to the area of its opening.

A 'further object is to provide a corvi ventilator that, having' been setv in a predetern mined `position, will remain in that position regardless of vibration and road shocks.

The invention possesses other features of advantage, some of which with the fore going will be set` forth in the following scription of the preferred 'form of my 1nvention, and illustrated in tbe accompanying drawings.

lt is to be understood tliat l do not limit myself to the construction shown as vary ing 'forms ot construction may be resorted to 'without departing from tbe spirit of my invention as claimed.

Referring to the drawings Figure 1 is a fragmentary view in eleva-` tion, and partly in section, illustratine' my device as installed in the cowl of a ve iicle.

Fig. 2 is a section taken on line 2- -2, of Fig. 1, looking in the direction of the arrows toward the drivers seat.

ln Fig. 1 l have shown a fragmentary portion of motor vehicle, including the cowl 2, conventional Windshield, and the instrument board 3, disposed within convenient reach of the driver.

Formed in the cowl 2 and preferably eentrally disposed in relation to tlie longitudinal center line of tne body', is an opening 5. Surrounding tlie opening and suitably Secured to the covvl is a anged trarne 6, illustrated in the present instance as a meta-l casting.

Designed to form a closure for the opening 5 when seated on tlie 4trarne 6, is a cover plate 9 pivotally disposed on the 'frame 6 on one of its shallow side Walls 7. f

Extending downwardly from Atbe cowl 2, is a bar 12, bent double at its lower end to provide a. bearingl 14. The upper end of the bar may be secured to the cowl 2 by suitable means suoli as the bolts 15,'one of Wliieli also secures the frame 6.

Journalled in the bearing 14, is a bushing 16, through which an operating rod 18 eX- tends, one end of the rod extending through the instrument board 3 and being provided with an operating knob 21. Secured to the other end or" the rod is a disk ,24 and a crankrarin 23. Means are provided for connecting the crank `arin to the cover plate. The connecting means are such tbat'they Will'not rattle and will bold the closure plate in adjusted position. 'Projecting from the underside of the closure plate 9 is a threaded stern 1G and. secured to tbe crank arm 23 at its outer end for universal movement in relation thereto, is a threaded rod 25. A spiral spring 32 connects tbc stem and rod, being screwed onto the threaded ends thereof. The distance of travel of tbe threaded stem 10 is less tlian the distance of travel of' tlie connector 25, so tliat when tlie crank arm is turned to its downward position., tbe s rino is placed ander tension, thus holding t e closure plate tightly in place. Une of tbe tlireaded stems, preferably tbe lower stem 25, is made long, so tliat by screwing.

tbe spring onto it for variable distances, the

normal length of tlie spring may be varied. The device is thus adjustable to meet varyin conditions in dillereut automobiles.

' sans are provided 'or'holding the closure plate in any desired position of adjustment. The disk 24 is formed with a plurality of ciicuniiierentially spaced tongues 35 upset from its surface. Bearing against tbs disk at tbe "toufrue portion is a flat spring $33. The spring prevents counterrotation of tbe disk, preventsits accidental rotation, and presses it 'forwardly so that longitudinal movement of the shaft 18 is avoided.

Means are also provided whereby the cover plate 9 is resiliently pivotally disposed on tbe trame 6, the said resilient pivotal means providing additional rattle preventing means when the cover ola-te is closed or open. Formed on tlie un er side 

